'pwnable.kr' is a non-commercial wargame site which provides various pwn challenges regarding system exploitation. The main purpose of pwnable.kr is 'fun'. Please consider each of the challenges as a game. While playing pwnable.kr, you could learn/improve system hacking skills but that shouldn't be your main purpose.

Scoring is a bit arbitrary and requires manual tweaking for many sites. And there are no real guidelines to do so. Because of this, things are likely not really consistent. Not sure how to solve this in the short term.